[C320-list] Knock, knock, who's there?

[James Sweet]

Engine. Way to test it is to grab the shaft and and yank it up and down. That's finally how it was diagnosed 

Sent from my iPhone

> On Oct 15, 2016, at 1:50 PM, John Morrison <sail-ability at sympatico.ca> wrote:
> 
> Also shaft alignment with what; the engine transmission, the leel, centered on the rudder? My boat 574 makes a clicking noise on one turn but I can't remember which, and boat is now on the hard.
> JohnM
> 1999#574
> 
> Sent from my iPhone
> 
>> On Oct 15, 2016, at 1:10 PM, Ted Harrison <tharrison at innovations-plus.com> wrote:
>> 
>> Jim, I have a couple of questions. 
>> 
>> With your solution being the prop shaft alignment what has worn. 
>> 
>> Was the strut weakened? 
>> 
>> Was The cutlass bearing worn and more on one side than the other? 
>> 
>> How is the condition of the log shaft, log shaft hose and any sign of leaks with the fix?
>> 
>> Thanks for letting us know the results. 
>> 
>> Ted Harrison
>> 
>>> On Oct 15, 2016, at 9:54 AM, Jim Sweet <jamesweet at frontiernet.net> wrote:
>>> 
>>> After 2 years of screwing around (re-epoxy of the rudder post, numerous sails with mechanics, etc.) we finally got the knocking sound that appeared on hard port turns fixed.  It is the shaft just slightly out of alignment (something that was posited and rejected early on).  Re-alignment of the shaft has stopped the annoying knock and the boat is quiet again.
>>> 
>>> Jim Sweet
>>> TGIF (Thank God It Floats) 902
>>> ----- Original Message ----- From: "B. Stumpp" <bstumpp at comcast.net>
>>> To: <c320-list at lists.catalina320.com>
>>> Sent: Sunday, May 10, 2015 4:40 PM
>>> Subject: [C320-list] Knock, knock, who's there?
>>> 
>>> 
>>>> We went out for our first Spring sail this afternoon.  Everything worked
>>>> great BUT with the engine running and turning left I get a knocking sound
>>>> with what seems like every revolution of the prop shaft.  It does not make
>>>> the noise when going straight, turning right or in either direction in
>>>> reverse.     If I speed up the engine the noise  goes faster.  I stuck my
>>>> head in the engine compartment both in front of and behind the bulkhead,
>>>> the sound is emanating farther back towards the stern.  It's not  a real
>>>> loud knock but kind of like someone lightly tapping on the deck with a
>>>> hammer as a surveyor does when checking for moisture.   Before we launched
>>>> the cutlass bearing and strut all seemed fine.  Has anyone experienced this
>>>> before?
>>>> 
>>>> 
>>>> 
>>>> Bruce Stumpp
>>>> 
>>>> Adventure, #647
>>>> 
>>>> Frog Mortar Creek, Maryland
>>>